MAX5942ACSE データシートの表示（PDF） - Maxim Integrated
部品番号
コンポーネント説明
メーカー
MAX5942ACSE
Maxim Integrated
MAX5942ACSE Datasheet PDF : 24 Pages
| |||
IEEE 802.3af Power-Over-Ethernet
Interface/PWM Controller for Power Devices
Typical Operating Characteristics (continued)
(VIN = (GND - VEE) = 48V, GATE = PGOOD = PGOOD = OUT = OPEN, UVLO = VEE, VDD = 13V, NDRV floating, TA = TMIN to TMAX.
Typical values are at TA = +25°C. All voltages are referenced to VEE (for graphs 1–11 in the Typical Operating Characteristics); all
voltages are referenced to V- (for graphs 12–30 in the Typical Operating Characteristics), unless otherwise noted.
INRUSH CURRENT CONTROL
(VIN = 48V)
MAX5942A/B toc10
INRUSH CURRENT CONTROL
(VIN = 67V)
VSS_SHDN vs. TEMPERATURE
(AT THE END OF SOFT-START)
1.003
2ms/div
VGATE
5V/div
IINRUSH
100mA/div
VOUT
50V/div
PGOOD
50V/div
2ms/div
VGATE
5V/div
1.002
IINRUSH
100mA/div
1.001
VFB = V-
VOUT
50V/div
PGOOD
50V/div
1.000
0.999
-40 -20 0
20 40 60 80
TEMPERATURE (°C)
NDRV FREQUENCY
vs. TEMPERATURE
278
MAX5942A
MAXIMUM DUTY CYCLE vs. TEMPERATURE
81.0
MAX5942B
MAXIMUM DUTY CYCLE vs. TEMPERATURE
48.0
277
FB = V-
276
275
274
80.9
80.8
FB = V-
80.7
80.6
80.5
47.8
FB = V-
47.6
47.4
47.2
47.0
273
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
80.4
-40 -20 0
20 40 60 80
TEMPERATURE (°C)
46.8
-40 -20 0
20 40 60 80
TEMPERATURE (°C)
V+ SUPPLY CURRENT
vs. TEMPERATURE
1.64
1.63
1.62
1.61
FB = VDD = V-
1.60
1.59
1.58
1.57
1.56
1.55
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
SOFT-START SOURCE CURRENT
vs. TEMPERATURE
4.50
4.49
VDD = FB = SS_SHDN = V-
4.48
4.47
V+ = 67V
4.46
4.45
4.44
4.43
4.42
4.41
4.40
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
V+ INPUT CURRENT vs.
TEMPERATURE (AFTER STARTUP)
13.80
13.75
13.70
V+ = 67V, VDD = 13V, FB = V-
13.65
13.60
13.55
13.50
-40 -20 0
20 40 60 80
TEMPERATURE (°C)
_______________________________________________________________________________________ 7
Share Link: